Cantica Symphonia
type: MusicGroup
genre: choral
genre: medieval
popularity: 8
followers: 1147
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additional property: OTSVerifyInstructions
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  value: 1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
subject of: OpenTimestamps Proof of Existence
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x160c73bd7f9f84e54c5cd3340db0508b155119194f35f39bb774e39d76a6e191. Chain 2 (Bitcoin): anchored in block 954618 (2026-06-20T23:05:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c8c7cf93-e491-40f2-a283-d6d0d194ab6d.json and https://artists.proofprofile.net/proofs/artist/c8c7cf93-e491-40f2-a283-d6d0d194ab6d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-20T23:05:13Z
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album: J.S. Bach: Concertos for Recorder
  type: MusicAlbum
  date published: 2023-06-16
track: Serse, HWV 40 / Act I: "Già la tromba, che chiamò" (I)
track: Serse, HWV 40 / Act I: "Già la tromba, che chiamò" (II)
track: Stabat Mater

Serse, HWV 40 / Act I: "Già la tromba, che chiamò" (I)
type: MusicRecording
duration: PT0M41S
duration ms: 41240
explicit: false
by artist: George Frideric Handel
by artist: Il Pomo D'oro
by artist: Maxim Emelyanychev
by artist: Cantica Symphonia
by artist: Giuseppe Maletto
in album: Handel: Serse
  type: MusicAlbum
  date published: 2018-11-02
genre: classical
genre: early-music
genre: baroque
genre: english-baroque
genre: german-baroque
isrc code: DEN961830622
additional property: CopyrightID
additional property: CopyrightStatus
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additional property: OTSVerificationAPI
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additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-08T03:20:19Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
additional property: ProofProfileEvidenceStatus
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subject of: OpenTimestamps Proof of Existence
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3337e61ec87a59502594fd00b933ffb5c149da8466c773c94bee10ba5f6466a4. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEN961830622.
  date published: 2026-07-08T03:20:19Z
audio: Serse, HWV 40 / Act I: "Già la tromba, che chiamò" (I)
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  additional property: Tempo (BPM)
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  additional property: Time Signature
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    value: 5
  additional property: Danceability
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  additional property: Speechiness
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  additional property: Instrumentalness
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  additional property: Valence (Positivity)
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    value: 0.95
  additional property: Loudness (dB)
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  additional property: Key Name
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    value: C#
  additional property: Mode Name
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Serse, HWV 40 / Act I: "Già la tromba, che chiamò" (II)
type: MusicRecording
duration: PT0M42S
duration ms: 42666
explicit: false
by artist: George Frideric Handel
by artist: Il Pomo D'oro
by artist: Maxim Emelyanychev
by artist: Cantica Symphonia
by artist: Giuseppe Maletto
in album: Handel: Serse
  type: MusicAlbum
  date published: 2018-11-02
genre: classical
genre: early-music
genre: baroque
genre: english-baroque
genre: german-baroque
isrc code: DEN961830625
additional property: CopyrightID
additional property: CopyrightStatus
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additional property: OTSVerificationAPI
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
additional property: ProofProfileEvidenceStatus
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subject of: OpenTimestamps Proof of Existence
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe65a59d948ceb41fa9cf8b4765d09f28beaba760aee4c35b8d397ce90159cc55. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEN961830625.
  date published: 2026-07-08T03:53:27Z
audio: Serse, HWV 40 / Act I: "Già la tromba, che chiamò" (II)
  type: AudioObject
  additional property: Tempo (BPM)
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Stabat Mater
type: MusicRecording
duration: PT7M29S
duration ms: 449293
explicit: false
by artist: Josquin des Prez
by artist: Cantica Symphonia
by artist: Giuseppe Maletto
in album: Stabat Mater
  type: MusicAlbum
  date published: 2020-11-06
genre: classical
genre: early-music
genre: renaissance
genre: franco-flemish-school
isrc code: ES7892001601
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
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subject of: OpenTimestamps Proof of Existence
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x360880bf486f9644d856bada996531958e2fffdcbc2d722ea0c63e9aaca12dd5. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ES7892001601.
  date published: 2026-07-08T03:53:27Z
audio: Stabat Mater
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